public override async Task <Stream> GetOrNullAsync(BlobProviderGetArgs args)
{
var container = await DatabaseBlobContainerRepository.FindAsync(
args.ContainerName,
args.CancellationToken
);
if (container == null)
{
return(null);
}
var blob = await DatabaseBlobRepository.FindAsync(
container.Id,
args.BlobName,
args.CancellationToken
);
if (blob == null)
{
return(null);
}
return(new MemoryStream(blob.Content));
}
public override async Task SaveAsync(BlobProviderSaveArgs args)
{
var container = await GetOrCreateContainerAsync(args.ContainerName, args.CancellationToken);
var blob = await DatabaseBlobRepository.FindAsync(
container.Id,
args.BlobName,
args.CancellationToken
);
var content = await args.BlobStream.GetAllBytesAsync(args.CancellationToken);
if (blob != null)
{
if (!args.OverrideExisting)
{
throw new BlobAlreadyExistsException(
$"Saving BLOB '{args.BlobName}' does already exists in the container '{args.ContainerName}'! Set {nameof(args.OverrideExisting)} if it should be overwritten.");
}
blob.SetContent(content);
await DatabaseBlobRepository.UpdateAsync(blob, autoSave : true);
}
else
{
blob = new DatabaseBlob(GuidGenerator.Create(), container.Id, args.BlobName, content, CurrentTenant.Id);
await DatabaseBlobRepository.InsertAsync(blob, autoSave : true);
}
}
public override async Task <bool> ExistsAsync(BlobProviderExistsArgs args)
{
var container =
await DatabaseBlobContainerRepository.FindAsync(args.ContainerName,
args.CancellationToken);
if (container == null)
{
return(false);
}
return(await DatabaseBlobRepository.ExistsAsync(container.Id, args.BlobName,
args.CancellationToken));
}
public override async Task <bool> DeleteAsync(BlobProviderDeleteArgs args)
{
var container = await DatabaseBlobContainerRepository.FindAsync(
args.ContainerName,
args.CancellationToken
);
if (container == null)
{
return(false);
}
return(await DatabaseBlobRepository.DeleteAsync(
container.Id,
args.BlobName,
autoSave : true,
cancellationToken : args.CancellationToken
));
}
